| 一氧化碳在Ru/Al2O3上吸附态的相互转化和稳定性的研究 |
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| 引用本文： | 辛勤,张慧,应品良,郭燮贤,陈耀强,陈豫.一氧化碳在Ru/Al2O3上吸附态的相互转化和稳定性的研究[J].高等学校化学学报,1983,4(1):75. |
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| 作者姓名： | 辛勤 张慧 应品良 郭燮贤 陈耀强 陈豫 |
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| 作者单位： | 1. 中国科学院大连化学物理研究所;
2. 四川大学分析测试中心 |
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| 摘 要： | 本文利用差分红外光谱方法研究了不同预处理条件下,CO在4% Ru/Al2O3上的吸附,以及H2和CO在Ru/Al2O3上的共吸附。对CO在Ru上吸附态的红外光谱进行了归属,认为2070cm-1-2060cm-1的中频谱带是孪生CO吸附态的对称伸缩振动和线式CO吸附态的伸缩振动相叠合的谱带。讨论了表面碳(CS)、表面氧(OS)、表面氢(HS)对CO吸附态的影响,认为CO在Ru上发生岐化反应形成的表面碳可使Ru=CO键加强,共吸附H2可使Ru-CO键削弱。表面氧促使形成缺电子的中心,在此中心上生成CO孪生吸附态。CO的孪生吸附是活化吸附过程。
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| 收稿时间： | 1981-07-21 |
A STUDY ON THE TRANSFORMATION AND STABILITY OF ADSORPTION STATES OF CARBON MONOXIDE ON ALUMINA SUPPORTED RUTHENIUM |
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| Xin Qin,Zhang Hui,Ying Pinliang,Guo Xiexian,Chen Yaoqiang,Chen Yu.A STUDY ON THE TRANSFORMATION AND STABILITY OF ADSORPTION STATES OF CARBON MONOXIDE ON ALUMINA SUPPORTED RUTHENIUM[J].Chemical Research In Chinese Universities,1983,4(1):75. |
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| Authors: | Xin Qin Zhang Hui Ying Pinliang Guo Xiexian Chen Yaoqiang Chen Yu |
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| Institution: | 1. Dalian Institute of Chemical Physics, Academia Sinica Dalian;
2. Centre of Analysis and Measurement, Sichuan University Chengdu |
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| Abstract: | Adsorption of carbon monoxide and the co-adsorption of hydrogen and carbon monoxide on alumina supported 4% ruthenium have been studied by the differential infrared spectroscopy. The bands of COadsorbed on ruthenium have been assigned. The band of medium frequency at 2070-2060cm-1 is assigned to the overlap bands of symmetric stretching vibration of twin COand stretching vibration of linearly adsorbed CO. The influences of surface C (Cs), surface H (Hs) and surface O (Os) on adsorption states of carbon monoxide are discussed. It is shown that the surface carbon formed by the disproportionation of CO enhances strengthening of Ru-CO bonding, however, the co-adsorption of hydrogen weakens strengthening of Ru-CO bonding. Surface oxygen impels to form the site deficient electron. Twin CO could be formed in the sites. Adsorption of twin CO is active adsorption. |
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